Assigitoe of



(No Model.) 2 Sheets-Sheet 1.

P. BNG'BLHARD. l

L OGK VALVE@ No. 322,590. i Patented July 2 1, 1885.A

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(No Moae1.)- 2 Sheetssheet 2.

BIENGBL'HARD. v n 1.00K VALVE.. No. 322,590. Patema July 21, 1885.

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l @i fm' ATTORNEY NTTED STATES PATENT OFFICE.

FRANK ENGELFIARD, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO D. S. IQOOMIS, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No.322,590, dated July 21, 1885.

d Application filed April '1, 1884. (No model.)

To a/ZZ whom it may concern.-

Be it known that I, FRANK ENGELHARD, a citizen of the United States,residing in Springfield, Hampden county, Massachusetts, have invented new and useful Improvements in Lock-Valves, of which the following is aspecieation, reference being had to the accompanying drawings.

valves for use in rag-engines.

Heretofore the valves usually used in rag-v engines have been found objectionable because of their liability to be forced open by the pressure within the discharge-pipe, and because of the great liability of those which are adapted to be locked in place j becoming clogged and rendered inoperative or very difficult to operate.

The object of my invention is to provide a lock-valve for rag-engines which shall be of simple construction and easily operative, while effectually locking the valve in its seat, and preventing` its being forced open by the pressure within the discharge-pipe, and of such construction that the stuff will not clog and prevent the operation of the locking mechanism. ln short, my object is to constructa device which shall be free from the objectionable features heretofore existing; and I accomplish these objects by the construction herein shown.

In the accompanying drawings, in which similar letters of reference indicate like parts,

`Figure l, at the left, is a sectional viewin the direction A B C of Fig. 2, and at the right a bottom view of the corresponding half of the valve. Fig. 2 is a view of the left of asection in the plane D E F G, Fig. l, and at the right of a side of the corresponding half, part of the valve proper being removed, disclosing a side view of the working parts of the valve; and Fig. 3 is a perspective of my device as seen from the under side.

The'letter a designates the valve-seat, and b the valve proper, the latter being formed with a slot or opening to receive a sliding block or piece, and on the under side is formed with projecting lugs or ears it', which have openings to receive the locking-bolts.

The letter c designates the sliding block or piece tted to the slot or opening in the valve,

and formed in its lower portion with slots ce, and at its upper end has a notch, d, or other proper means by which it may be withdrawn, and by means of which the valve may be lifted from its seat.

The letters y g designate the locking-bolts, formed with slots k k, and provided with pins ff at'their inner ends. These locking-bolts are adj usted or arranged in operative position by .having their outer ends passed through v'apertures in the .side wall of the valve or through those in the lugs i z', and their inner ends secured to slide within the slots e cof the sliding block by the pins ff, headed pins or bolts h 'h being passed through the lslotsc 7c and secured in the v'alve substantially as seen in the drawings. v

The operation of the valve is as follows: Upon the part c being drawn outward' the pins traversing the diagonal slots ff will draw the locking-bolts g ginward or toward the center past the edge j of the valve, and allow the valve to be raised from its seat. rlhe reverse will force the bolts outward and hold the valve rmly in its seat until thebolts are again drawn inward.

As it is desirable that no part of the valve mechanism should project above the inner surface of the rag-engine, I cnt the part c flush with the upper surface of the valve and recess the face-of the valve sufliciently to permit a hook to be passed into a notch or opening in the part c, whereby the same may be drawn outward.

The advantage of this construction over the valves which are adapted to be locked in place by turning them after being placed in the valve-seat is seen in the fact that obstructions will not interfere with the operation of my device to as great extent as in those, and that the relative amount of force required to operate the valves is much less with my device than with one of the construction referred to.

It will also be seen that the rusting of the valve in its seat or clogging of the parts with paper stuff or pulp will not interfere with its use, as it is found to do in the valves heretofore used.

If it is desired, the whole of the mechanism which operates the bolts may be inclosed.

I am aware that faucets having bolts adapted to lock the faucet-stem in place have been be fore made. These, however, are in no way adapted for use in rag-engines, and I make no claim to faucets.

I am also aware that a tap or nipple for water and gas mains has been constructed which is adapted to be secured to themains by grapplers or hooks, which are forced outward by the action of a threaded nut, and I make no claim to such construction.

Having therefore described my invention, what I claim as new, and desire to secure by Letters Patent, is-

their outward ends projected through thel openings in the side wall of the valve, substantially as described.

2.'Y In combination with the valve Z), formed with an opening to receive a sliding block and provided with retaining bolts or pins h h in its under side, the sliding block c, formed with slots e e, and the lockingbolts g g, formed with slots 7c k, and having their inner ends secured to slide Within the slots of the sliding block, and held in position by the retaining bolts or pins, substantially as described, and for the purposes stated.

3. The combination of the valve-seat a and valve b, formed with a slot to receive a sliding block and having perforated lugs z' ,and provided with retaining-bolts 71, l1., with the sliding block c, formed with slots e e, and the locking-bolts g g, having slots 7c k, and having their inner ends secured to slide within the FRANK ENGELHARD.'

Witnesses:

PATRICK J. OCONNELL, CHARLES MAYs. 

